Opel COMBO Owner's Manual page 17

Windscreen washer
Pull stalk.
Windscreen washer system 3 91.
Washer fluid 3 217.
Wiper blade replacement 3 219.
Rear window wiper
Turn outer cap to activate the rear
window wiper:
OFF : off
INT : intermittent operation
In brief
Rear window washer
Push stalk.
Washer fluid is sprayed on the rear
window and the wiper wipes a few
times.
Rear window wiper / washer 3 93.
15